1 /**
2 * \file drm_sarea.h
3 * \brief SAREA definitions
4 *
5 * \author Michel Dänzer <michel@daenzer.net>
6 */
7
8 /*
9 * Copyright 2002 Tungsten Graphics, Inc., Cedar Park, Texas.
10 * All Rights Reserved.
11 *
12 * Permission is hereby granted, free of charge, to any person obtaining a
13 * copy of this software and associated documentation files (the "Software"),
14 * to deal in the Software without restriction, including without limitation
15 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
16 * and/or sell copies of the Software, and to permit persons to whom the
17 * Software is furnished to do so, subject to the following conditions:
18 *
19 * The above copyright notice and this permission notice (including the next
20 * paragraph) shall be included in all copies or substantial portions of the
21 * Software.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
26 * TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
27 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
28 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
29 * OTHER DEALINGS IN THE SOFTWARE.
30 */
31
32 #ifndef _DRM_SAREA_H_
33 #define _DRM_SAREA_H_
34
35 #include "drm.h"
36
37 #if defined(__cplusplus)
38 extern "C" {
39 #endif
40
41 /* SAREA area needs to be at least a page */
42 #if defined(__alpha__)
43 #define SAREA_MAX 0x2000U
44 #elif defined(__mips__)
45 #define SAREA_MAX 0x4000U
46 #elif defined(__ia64__)
47 #define SAREA_MAX 0x10000U /* 64kB */
48 #else
49 /* Intel 830M driver needs at least 8k SAREA */
50 #define SAREA_MAX 0x2000U
51 #endif
52
53 /** Maximum number of drawables in the SAREA */
54 #define SAREA_MAX_DRAWABLES 256
55
56 #define SAREA_DRAWABLE_CLAIMED_ENTRY 0x80000000
57
58 /** SAREA drawable */
59 struct drm_sarea_drawable {
60 unsigned int stamp;
61 unsigned int flags;
62 };
63
64 /** SAREA frame */
65 struct drm_sarea_frame {
66 unsigned int x;
67 unsigned int y;
68 unsigned int width;
69 unsigned int height;
70 unsigned int fullscreen;
71 };
72
73 /** SAREA */
74 struct drm_sarea {
75 /** first thing is always the DRM locking structure */
76 struct drm_hw_lock lock;
77 /** \todo Use readers/writer lock for drm_sarea::drawable_lock */
78 struct drm_hw_lock drawable_lock;
79 struct drm_sarea_drawable drawableTable[SAREA_MAX_DRAWABLES]; /**< drawables */
80 struct drm_sarea_frame frame; /**< frame */
81 drm_context_t dummy_context;
82 };
83
84 #ifndef __KERNEL__
85 typedef struct drm_sarea_drawable drm_sarea_drawable_t;
86 typedef struct drm_sarea_frame drm_sarea_frame_t;
87 typedef struct drm_sarea drm_sarea_t;
88 #endif
89
90 #if defined(__cplusplus)
91 }
92 #endif
93
94 #endif /* _DRM_SAREA_H_ */
95
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